1. Optical Maser Action ofNd+3in a Barium Crown Glass
2. Infrared Luminescence from Bismuth-Doped Silica Glass
3. S. Kishimoto, M. Tsuda, K. Sakaguchi, Y. Fujimoto, and M. Nakatsuka, in: Proc. of the XX International Congress on Glass, Kyoto, Japan, September 27 - October 1, 2004 (ICG 04), paper O-14-29.
4. Bismuth- and aluminum-codoped germanium oxide glasses for super-broadband optical amplification
5. V.V. Dvoyrin, V.M. Mashinsky, E.M. Dianov, A.A. Umnikov, M.V. Yashkov, and A.N. Guryanov, in: Proc. European Conference on Optical Communications, Glasgow, UK, September 25-29, 2005 (ECOC 05), paper Th 3.3.5.